/* ============================================================
   Particle Designer - item styles
   Phone: one column, the preview first. From 900px: the
   preview across the top, the cards in 2 or 3 columns below.
   ============================================================ */

.pd {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: "hero" "presets" "look" "emit" "motion" "export";
  gap: 1.1rem;
  padding-block: 1.1rem 0;
}
.pd-hero    { grid-area: hero; }
.pd-presets { grid-area: presets; }
.pd-emit    { grid-area: emit; }
.pd-motion  { grid-area: motion; }
.pd-look    { grid-area: look; }
.pd-export  { grid-area: export; }

/* Desktop: the preview full width on top, settings below. */
@media (min-width: 900px) {
  .pd {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-areas:
      "hero    hero"
      "presets look"
      "emit    look"
      "motion  export";
    align-items: start;
    gap: 1.2rem;
    padding-top: 1.6rem;
  }
}
@media (min-width: 1100px) {
  .pd {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-areas:
      "hero    hero hero"
      "presets look emit"
      "export  look emit"
      "export  look motion";
  }
}

.pd > section { padding-block: 0; min-width: 0; }
.pd h2 { font-size: 1.2rem; margin: 0 0 .8rem; }

.pd-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.pd > .pd-card { padding: 1.1rem 1.1rem 1.2rem; }

/* ============================================================
   1. PREVIEW
   ============================================================ */
.pd-stage {
  position: relative;
  height: clamp(260px, 50svh, 520px);
  background: var(--bg-2);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: crosshair;
  touch-action: none;
  -webkit-user-select: none;
          user-select: none;
  -webkit-touch-callout: none;
}
.pd-stage:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.pd-stage > canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.pd-count,
.pd-paused {
  position: absolute;
  margin: 0;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text);
  background: rgba(7, 7, 12, .7);
  border-radius: 6px;
  padding: .2rem .5rem;
}
.pd-count  { left: .5rem; bottom: .5rem; }
.pd-paused { right: .5rem; top: .5rem; color: var(--accent); }

.pd-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
  margin-top: .8rem;
}
.pd-bar .btn { min-height: var(--tap); flex: 1 1 7rem; }
.pd-bar kbd,
.pd-preset kbd { font-size: .72rem; color: var(--text-faint); background: var(--bg-2); }
.pd-bg {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex: 1 1 9rem;
  justify-content: flex-end;
  font-size: .9rem;
  color: var(--text-dim);
  cursor: pointer;
}

/* Colour pickers: a big square swatch. */
.pd input[type="color"] {
  width: var(--tap);
  height: var(--tap);
  padding: 3px;
  background: var(--bg-2);
  border: 1px solid var(--line-field);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex: none;
}
.pd input[type="color"]:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.pd-hint { margin: .6rem 0 0; font-size: .85rem; color: var(--text-faint); }

/* ============================================================
   2. PRESETS
   ============================================================ */
.pd-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 8.5rem), 1fr));
  gap: .5rem;
}
.pd-preset { min-height: var(--tap); justify-content: space-between; padding-inline: .9rem; }
.pd-preset[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-dim); }

/* ============================================================
   3. SLIDERS (same fat-thumb sliders as SFX Maker)
   ============================================================ */
.pd-fs { border: 0; margin: 0 0 .8rem; padding: 0; min-width: 0; }
.pd-fs legend,
.pd-slider label,
.pd-name label,
.pd-stop-field label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 0;
}
.pd-fs legend { margin-bottom: .45rem; }

.pd-slider { margin-bottom: .3rem; }
.pd-slider label { display: flex; justify-content: space-between; align-items: baseline; gap: .5rem; margin-bottom: 0; }
.pd-slider output {
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text);
  white-space: nowrap;
}
.pd-slider.is-off { opacity: .5; }

.pd input[type="range"] {
  -webkit-appearance: none;
          appearance: none;
  width: 100%;
  height: 40px;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.pd input[type="range"]:focus { background: transparent; }
.pd input[type="range"]::-webkit-slider-runnable-track { height: 6px; border-radius: 3px; background: var(--line-bright); }
.pd input[type="range"]::-moz-range-track { height: 6px; border-radius: 3px; background: var(--line-bright); }
.pd input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 26px; height: 26px; margin-top: -10px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
}
.pd input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
}
.pd input[type="range"]:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* ---- segmented radio buttons ---- */
.pd-seg {
  display: grid;
  border: 1px solid var(--line-field);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.pd-seg-2 { grid-template-columns: 1fr 1fr; }
.pd-seg-3 { grid-template-columns: repeat(3, 1fr); }
.pd-seg input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pd-seg label {
  display: grid;
  place-items: center;
  min-height: var(--tap);
  padding: 0 .3rem;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .9rem;
  cursor: pointer;
  color: var(--text-dim);
  border-left: 1px solid var(--line-field);
  -webkit-user-select: none;
          user-select: none;
}
.pd-seg label:first-of-type { border-left: 0; }
.pd-seg label:hover { color: var(--text); background: var(--surface-2); }
.pd-seg input:checked + label { background: var(--accent); color: var(--bg); }
.pd-seg input:focus-visible + label { outline: 2px solid var(--cyan); outline-offset: -4px; border-radius: 6px; }

/* ============================================================
   4. COLOUR OVER LIFE
   ============================================================ */
.pd-sub {
  font-size: .95rem;
  margin: 1.1rem 0 .55rem;
  color: var(--text);
}
.pd-grad {
  height: 28px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-field);
  overflow: hidden;
  /* A checkerboard behind, so see-through stops show as see-through. */
  background-color: #2b2e3f;
  background-image:
    linear-gradient(45deg, #363a4e 25%, transparent 25%, transparent 75%, #363a4e 75%),
    linear-gradient(45deg, #363a4e 25%, transparent 25%, transparent 75%, #363a4e 75%);
  background-size: 14px 14px;
  background-position: 0 0, 7px 7px;
}
.pd-grad-fill { height: 100%; background: var(--grad, transparent); }
.pd-grad-ends {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text-faint);
  margin: .2rem 0 .4rem;
}

.pd-stops { list-style: none; margin: 0 0 .6rem; padding: 0; display: grid; gap: .45rem; }
.pd-stop {
  display: flex;
  align-items: center;
  gap: .55rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: .4rem .45rem;
}
.pd-stop-fields { flex: 1; min-width: 0; display: grid; gap: 0; }
.pd-stop-field label { display: block; font-size: .66rem; letter-spacing: .08em; margin-top: .15rem; }
.pd-stop-field input[type="range"] { height: 32px; }
.pd-stop-del { min-width: var(--tap); min-height: var(--tap); padding: 0; border: 0; color: var(--text-faint); flex: none; }
.pd-stop-del:hover { color: var(--hot); }

/* ============================================================
   5. EXPORT
   ============================================================ */
.pd-name { margin-bottom: .2rem; }
.pd-name input { min-height: var(--tap); }
.pd-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 9rem), 1fr));
  gap: .5rem;
  margin-top: .3rem;
}
.pd-actions .btn { min-height: var(--tap); }
.pd-check {
  display: flex;
  align-items: center;
  gap: .6rem;
  min-height: var(--tap);
  font-size: .92rem;
  color: var(--text-dim);
  cursor: pointer;
}
.pd-check input { width: 22px; height: 22px; accent-color: var(--accent); flex: none; }

.pd-details { margin-top: .6rem; }
.pd-details summary {
  min-height: var(--tap);
  display: flex;
  align-items: center;
  cursor: pointer;
  color: var(--cyan);
  font-size: .92rem;
}
.pd-code {
  display: block;
  width: 100%;
  max-width: 100%;
  min-height: 12rem;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: .75rem;
  line-height: 1.45;
  color: var(--text);
  background: var(--bg-2);
  border: 1px solid var(--line-field);
  border-radius: var(--radius-sm);
  padding: .6rem .7rem;
  overflow: auto;
}
.pd-status { margin: .7rem 0 0; font-size: .88rem; color: var(--green); min-height: 1.3em; overflow-wrap: anywhere; }
.pd-status:empty { min-height: 0; margin: 0; }